What role does secondary air play in combustion?

Secondary air plays a crucial role in enhancing the combustion process by creating turbulence. When secondary air is introduced into the combustion chamber, it mixes with the primary combustion gases and fuel, promoting more thorough mixing and interaction. This turbulence ensures that unburnt fuel and combustion gases are effectively exposed to the heat and reactive components, leading to a more complete burning process.

The introduction of secondary air not only increases efficiency by ensuring all available fuel is consumed but also helps to reduce the production of harmful emissions by allowing for more complete oxidation of the combustible materials. This is vital for achieving a cleaner and more efficient combustion, which ultimately supports better performance of combustion systems.